YT-21148 Serialize deleted columns according to new design

* Changelog entry

  Type: fix

  Component: master

  Deleted columns are now stored in table schema attributes instead of being represented as regular columns with `deleted` field.
commit_hash:bbcf72019585ce99df10ce93efe3995111f50f58

1 files changed, 7 insertions, 0 deletions

diff --git a/yt/cpp/mapreduce/interface/common.cpp b/yt/cpp/mapreduce/interface/common.cpp
index cea5a6a83fc..fdb3e66b191 100644
--- a/yt/cpp/mapreduce/interface/common.cpp
+++ b/yt/cpp/mapreduce/interface/common.cpp
@@ -449,6 +449,13 @@ bool operator==(const TColumnSchema& lhs, const TColumnSchema& rhs)
 
 ////////////////////////////////////////////////////////////////////////////////
 
+bool operator==(const TDeletedColumnSchema& lhs, const TDeletedColumnSchema& rhs)
+{
+    return lhs.StableName() == rhs.StableName();
+}
+
+////////////////////////////////////////////////////////////////////////////////
+
 bool TTableSchema::Empty() const
 {
     return Columns_.empty();